/Engine/Source/Editor/UnrealEd/Classes/Editor/EditorEngine.h
Plays a preview of a specified sound or node
[UAudioComponent](API\Runtime\Engine\Components\UAudioComponent) * PlayPreviewSound ( [USoundBase](API\Runtime\Engine\Sound\USoundBase) * Sound, [USoundNode](API\Runtime\Engine\Sound\USoundNode) * SoundNode )